2087494509 has 4 divisors (see below), whose sum is σ = 2783326016. Its totient is φ = 1391663004.

The previous prime is 2087494483. The next prime is 2087494531. The reversal of 2087494509 is 9054947802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2087494509 - 2⁵ = 2087494477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2087494589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347915749 + ... + 347915754.

It is an arithmetic number, because the mean of its divisors is an integer number (695831504).

Almost surely, 2^2087494509 is an apocalyptic number.

It is an amenable number.

2087494509 is a deficient number, since it is larger than the sum of its proper divisors (695831507).

2087494509 is an equidigital number, since it uses as much as digits as its factorization.

2087494509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695831506.

The product of its (nonzero) digits is 725760, while the sum is 48.

The square root of 2087494509 is about 45689.1071153727. The cubic root of 2087494509 is about 1278.0321546520.

The spelling of 2087494509 in words is "two billion, eighty-seven million, four hundred ninety-four thousand, five hundred nine".